The Riley RMF was the sibling of the Riley RME, just like the RMB was to the RMA. The RMF was a longer chassis, heavier saloon that carried a larger engine found in the RMB, RMC, RMD; a 2.5L inline-four called the “Big Four”. Although the RMF was only manufactured for 20 months, sales were very high, with 1050 units; it was replaced by the Riley RMH also known as the Pathfinder in 1953.